Tub Drain Hair Trap

I bought a home 6 months ago that has two full bathrooms. The upstairs bathtub drain was in disrepair when we bought the home. The stopper was basically removed and is nowhere to be found. I am interested in simply putting a hair trap in the tub to prevent hair from just washing down into the plumbing. I don't need a functional drain stopper as this bathroom is never used for baths, only showers. I am looking for some guidance on how to put a hair trap (not sure if that is the correct term) in place. Thanks in advance.